package com.netty;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.util.concurrent.EventExecutorGroup;

import java.util.logging.Logger;

public class TimeClientHandler extends ChannelHandlerAdapter {
    private static final Logger logger = Logger.getLogger(TimeClientHandler.class.getName());

    private int counter;

    private byte[] req;

    public TimeClientHandler() {
        req = ("QUERY TIME ORDER"+System.getProperty("line.separator")).getBytes();
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        ByteBuf message = null;

        for (int i = 0; i < 100; i ++) {
            message = Unpooled.buffer(req.length);
            message.writeBytes(req);
            ctx.writeAndFlush(message);
        }
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
//        ByteBuf buf = (ByteBuf)msg;
//        byte[] req = new byte[buf.readableBytes()];
//        buf.readBytes(req);
//
//        String body = new String(req, "UTF-8");
//        System.out.println("Now is : " + body + " ; the counter is : " + ++counter);
        String body = (String)msg;
        System.out.println("Now is : " + body + " ; the counter is : " + ++counter);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        logger.warning("Unexcepted exception from downstream : " + cause.getMessage());
        ctx.close();
    }
}
